Haq, Bilal U; Goreau, Margaret (1980): Nannoliths and paleobiogeographic census from DSDP Site 56-435 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.822031, Supplement to: Haq, BU; Goreau, M (1980): Calcareous nannofossils from the Japan Trench upper slope, Leg 56, Deep Sea Drilling Project. In: Scientific Party, Initial Reports of the Deep Sea Drilling Project, 56/57 (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 56-57, 867-873, https://doi.org/10.2973/dsdp.proc.5657.125.1980
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Abstract:
Calcareous nannofossils were encountered at only one of the sites (435) drilled during DSDP Leg 56. Cores from Hole 435A yield fairly diverse early and late Pliocene assemblages. The section shows considerable reworking, however. Three to five biostratigraphic datum events provide a reasonable biochronology. The datums range from about 3.3 Ma in Core 11 to about 1.8 Ma in Core 3. Paleobiogeographic data indicate relatively stable and warm climatic conditions in this area in the early Pliocene, becoming more unstable in the late Pliocene when the cosmopolitan species become dominant.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 39.734900 * Median Longitude: 143.792700 * South-bound Latitude: 39.734800 * West-bound Longitude: 143.792200 * North-bound Latitude: 39.735000 * East-bound Longitude: 143.793200
Date/Time Start: 1977-09-18T00:00:00 * Date/Time End: 1977-09-18T00:00:00
Event(s):
56-435 * Latitude: 39.734800 * Longitude: 143.792200 * Date/Time: 1977-09-18T00:00:00 * Elevation: -3401.0 m * Penetration: 150.5 m * Recovery: 78.4 m * Location: North Pacific/TRENCH * Campaign: Leg56 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 15 cores; 141 m cored; 9.5 m drilled; 55.6 % recovery
56-435A * Latitude: 39.735000 * Longitude: 143.793200 * Date/Time: 1977-09-18T00:00:00 * Elevation: -3401.0 m * Penetration: 244.5 m * Recovery: 44.9 m * Location: North Pacific/TRENCH * Campaign: Leg56 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 11 cores; 102 m cored; 0 m drilled; 44 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Haq, BU; Goreau, M (1980): (Table 2) Paleobiogeographic census from Pliocene of DSDP Hole 56-435. https://doi.org/10.1594/PANGAEA.822030
- Haq, BU; Goreau, M (1980): (Tabe 1) Nannoliths at DSDP Hole 56-435A. https://doi.org/10.1594/PANGAEA.822029